Owner's manual

2-4 ASUS P7H55-M
• NTFS is not supported under DOS environment. Do not save the BIOS le and BIOS
Updater to a hard disk drive or USB ash drive in NTFS format.
• Do not save the BIOS le to a oppy disk due to low disk capacity.
3. Turn off the computer and disconnect all SATA hard disk drives (optional).
Booting the system in DOS environment
1. Insert the USB ash drive with the latest BIOS le and BIOS Updater to the USB port.
2. Boot your computer. When the ASUS Logo appears, press <F8> to show the
BIOS
Boot Device Select Menu. Insert the support DVD into the optical drive and select the
optical drive as the boot device.
Welcome to FreeDOS (http://www.freedos.org)!
C:\>d:
D:\>
3. When the Make Disk menu appears, select the FreeDOS command prompt item by
pressing the item number.
4. At the FreeDOS prompt, type
d: and press <Enter> to switch the disk from
Drive C (optical drive) to Drive D (USB ash drive).
Please select boot device:
↑ and ↓ to move selection
ENTER to select boot device
ESC to boot using defaults
SATA:XXXXXXXXXXXXXXXX
CDROM:XXXXXXXXXXXXXXX
USB:XXXXXXXXXXXXXXXXX
Network:XXXXXXXXXXXXX
2. The BIOS Updater backup screen appears indicating the BIOS backup process. When
BIOS backup is done, press any key to return to the DOS prompt.
D:\>bupdater /oOLDBIOS1.rom
Filename Extension
Backing up the current BIOS
To backup the current BIOS le using the BIOS Updater
Ensure that the USB ash drive is not write-protected and has at least 1024KB free space
to save the le.
1. At the FreeDOS prompt, type bupdater /o[lename] and press <Enter>.
The [lename] is any user-assigned lename with no more than eight alphanumeric
characters for the lename and three alphanumeric characters for the extension.